Australian Sara Connor has been jailed for four years for her role in a fatal assault on a policeman in Bali.

The 46-year-old from Byron Bay was found guilty over the fight, which took place in August last year, alongside boyfriend David Taylor, a Briton who was jailed for six years at the same court hearing on Monday.

Lawyers for Connor argued she did nothing more than destroy evidence following the incident on Kuta beach but the judge in Denpasar said she sat on officer Wayan Sudarsa not to break up the fight but to stop Sudarsa fighting back.

Prosecutors had pushed for an eight-year sentence, saying she had not shown remorse or admitted involvement.

Connor and Taylor will have the time spent in Bali’s Kerobokan prison deducted from their sentences.

Outside the court, Taylor’s father, Reverend John Taylor, offered his “deepest condolences” to the victim’s family but said he believed David feared for his life that night “and his actions reflect that”.

He added: “At the end, we are content with the sentence.”

Connor has always maintained she was innocent and did nothing but try to separate Taylor and Sudarsa when they became embroiled in a fight in the early hours of 17 August 2016.

The pair had originally gone to trial facing charges of murder, fatal assault in company and assault causing death. However, last month prosecutor Agung Jayalantara said they should not be convicted of murder – which carries a maximum penalty of 15 years. It was clear, he said, the pair had not intended to kill the police officer.

Instead, the prosecutor submitted they should be convicted of fatal assault in company, which carries a maximum of 12 years.

Taylor, the prosecutor said, was having problems renewing a visa to Australia and was feeling the pressure of a broken marriage and his relationship with Connor when the pair met up on 16 August.

That night they went to dinner, had some drinks and then went to Kuta beach. When they realised Connor’s purse had gone missing, Taylor confronted Sudarsa but did not get the response he was hoping for.

Referring to a psychological evaluation of Taylor made after his arrest on 19 August, the prosecutor said: “Since there’s no help, [he] felt like he was being treated as suspect and the influence of liquor, it made the subject emotional and overwhelmed.

“[Taylor] felt very insulted and angry then they got involved in a fight.”

Taylor, the prosecutor told the court, had shown remorse, regret and had been upfront during the hearings.

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